Check-valve



\ (NoModel.)

P. YLUNKENKRIMI-IBR. Check Valve.

Patented Jah. 25, |881.

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UNITED STATES PATENT OFFICE.

FREDERICK LUNKENHEIMER, OF CINCINNATI, OHIO.

CH ECK-VALVE.

SPECIFICATION forming part of Letters Patent No. 236,899, dated January 25, 1881. Application led November 22, 1880. (No model.)

To all whom @t may concern Beit known that I, FREDERICK LUNKEN- HEIMER, of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Check-Valves, ot' which the following is a specification.

My invention is in the nature of an improvement in that class of 1check-valves which are guided entirely by devices placed above the seat; and my invention consists of a novel construction and arrangement of parts, which are fully illustrated in the accompanying drawings.

In the accompanying drawings, Figure l is a check-valve divided axially, containing a cup-valve guided by means ot' the cylindrical rim and central stem. Fig. 2is a check-valve similarly divided as in Fig. 1, containing a cup-valve guided by means of the annular rim or shell, central stem, and the win gs upon the gland Fig. 3 is a plan, partly in section, of the valve and gland ot' Fig. 1, and Fig. 4 is a similar view of the valve and gland ot' Fig. 2. Fig. 5 is a plan of the valve, annular rim, and the stem.

Similar letters of reference indicate corresponding parts.

A is the body of a check-valve of the ordinary form, provided with the usual in`letopening A' and outlet-opening A2.

B is the cap, cast with a nut, C, 'and made to screw on the neck D of the valve-body.

E is the cup-valve, provided with an annular rim, e', and central stem, e2.

F is a gland, iitted to the neck D of the valve-body, and provided with a central boss, f, bored to receive the stem e2 of the valve E.

e e are perforations in the lower edge of the rim e', to permit of ready access of the water to the upper side of the valve to hold it on its seat, and also to provide an outflow for the Water which may be in the `valve when the outlet-pipe is drained.

The stem e2 is provided with a squared socket, e3, to receive a plug-Wrench for grinding and regrinding the valve on its seat.

The valve E, when it lifts from the seat a, presents a clear annular aperture for the discharge ofthe water or other liquid, while in the ordinary form of valve, with wingguides,

the Wings always offer aserious obstruction to and materially contract the area ot' discharge, and as a consequence the lift of the ordinary form of check-valve to obtain a given effective area of discharge is much in excess of what it would be were the obstructing guide-wings removed. An increased rise and fall of the valve means an increased wear ot valve face and seat, much of which is avoided by the construction of valve herein described, by reason of the slight rise and fall required for a given opening ot' valve.

It will be observed that the form ot' valve shown in Fig. l is guided by the rim e', tilted to play up and down freely in the bore of the neck D, and by the stem e2, turned to pass freely through the boss f ot' the gland F, and that the valve shown in Fig. 2 is guided by the Win gs f in addition to the rim e and stem e2.

The valve is reground Without removal from the case or body, or by disturbing the pipeconnections, by unscrewing the cap B and inserting a plug-wrench in the squared opening e3 in the stem e2.

Having described my invention, what I claim is- 1. The gland F, contined within the neck D of the valve-body by means of the cap B, and constructed with the ydepending boss f, having a perforation through it, in combination with the valve E, resting on the seat a ot' the valve-body, and formed with the upward-projecting rim e and stem e2, and with openings e in the lower edge of the rim, for the entrance of water to hold the valve on its seat, all constructed and arranged as herein shown and described.

2. The combination of the cup-valve E, provided with the rim e and stem e2, and the gland F, provided with wing-guides f', with the valve-case A, substantially as and for the purpose described.

In testimony whereof I have signed my name to the foregoing specification in the presence of two subscribing witnesses.

FREDERICK LUNKENHEIMER.

Witnesses:

C. W. WITHENBURY, COLLIN FORD, Jr. 

